Part of the failure of modern philosophy (and thinking in general) is the inability to grasp analogy. I’ve been reading a series of posts where “to seek an end” and “desire.” Thus, since a rock does not desire to move down, it does not seek to move down and hence it is not ordered to move down. Q.E.D. teleology is defeated. The manifold meanings of “desire” can be worked out in their detail, but the inability to grasp or attempt to grasp the use of “desire” in several senses is part modern philosophy’s work of destroying well-reasoned distinctions.